Some progress to report. I have ordered the Rails and carriages, ball screws and bearings for the XYZ Axis from BST Automation. They say 7 Days to deliver - that's a bit frightening!

I have ordered the steel for the frame, all cut to size. (I have trouble getting 7.5 meter lengths down my lane, it has a sharp bend on it and hostile neighbours).

I think I'm ready to order some 20mm aluminium tooling plate which I think I will have cut to size. (extra £20) I have large bandsaw and TCT saw and cut off saw but I think first time I'll get them to do it. (They say +/- 0.2mm accuracy).

The next thing I'm onto and have read lots but would like advice on is the Stepper motors, drivers, motion controller and all the electrical parts I require for my build.

I will start with my guesses and advice so far on what is required.

X Axis - Nema34 8.7Nm High torque Stepper Motor 1.8 Deg. (Driving 2 x RM2020 Ball screws by 2:1 pulley)
Y Axis - Nema23 4Nm Stepper Motor (Driving RM1605 Ballscrew by 2:1 pulley)
Z Axis - Nema23 4Nm Stepper Motor (Driving RM1605 Ballscrew by 1:1 pulley)

3 x Stepper Drives (Leadshine 2-phase High-precision stepper drive AM882 fit NEMA 23-34 mode motor work 36-80VDC out 1.0A-8.2A)

1 x Motion Controler (CSMIO/IP-M 4-axis Ethernet Motion Controller (STEP/DIR) )http://www.zappautomation.co.uk/elec...-step-dir.html

Click image for larger version.  Name: csmioipm.jpg  Views: 2148  Size: 202.1 KB  ID: 19933 From this diagram I reckon I need some other things:

1 x 24V DC Power Supply?
1 x 80V DC Power Supply?
1 (or more) x Estops?
6? x Limit switches/Sensors http://www.ebay.co.uk/itm/LJ12A3-4-Z...c=1&rmvSB=true
Some fuses?
Some relays?
2 x Fans?
1 x Enclosure to put it all in?

You can see I'm getting out of my depth on the old Electrical front (Black Magic)
So over to you chaps. Thanks